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Advice please : External Insulation versus ??

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Comments

  • #62
    Feardorca
    Registered Users, Registered Users 2 Posts: 79 ✭✭Feardorca


    Your house sounds ideal for External Insulation- probably constructed of stone or mass concrete, solid block on the flat or a combination. My home was built mid 50's solid block on the flat, I did not want to dry line because of the massive disruption internally and reducing interior space. I chose External Insulation 120mm and had it completed by May2010 so I have had a great test with the very cold winter 2010/2011. I am delighted with it. I also had a new roof and when the old roof was exposed I had the contractor insulate the ROOF between rafters and the comfort difference is phenomonal. Come November I leave OFCH on constant at minimum setting on boiler right through to end March, the house is at a constant 20c+ with minimum use of oil (I also have a multi fuel stove linked in to the system) when lit cuts out the oil demand pretty much. The biggest thing I noticed was the Electric showe,r runs at setting 2/3 not 6/7 as the attic is now very close to the overall house temp. The rendering covering the external insulation is very strong and will withstand a sliother or other missiles even if comprimised can be easily repaired. The grant I'm sure you now know is €4000. Go for it !


  • #63
    SRV
    Registered Users, Registered Users 2 Posts: 50 ✭✭SRV


    Hi All,

    Im building a bungalow using supergrund foundation system and about to pour the slab.

    The walls are to be standard concrete block on flat with 10 inches of external polystyrene.

    I thought I was building an exceptional structure but this thread has really concerned me regards the possible or even likely failure of the system and subsequent water ingress.

    I would hate to go to all this trouble and expense only to have damp walls inside.

    Heinblood has provided lots of concerning information and pictures.

    As I havnt laid the blocks yet, should I be considering another method?

    Is there another thread on this subject which would deal with this possible failure.

    I will be sand cement plastering the inside of this block wall, and the internal walls are stud partitions. Would it be an idea to use water sealing plasticiser in the plaster to keep the damp out, as a kind of last barrier should it be needed.


    Or is there an economic way of creating a failsafe barrier on installation?

    Any guidance would be appreciated.

    thanks...........SRV


  • #64
    sydthebeat
    Subscribers Posts: 43,376 ✭✭✭✭sydthebeat


    SRV,

    you are going to get pros and cons on every type of construction method available.
    The success or failure of the method depends on the workmanship employed during the build. heinbloeds links, while valid, are dangerous to take in isolation... what do we know about the fixing methods? the substrata? the ability of the contractors?? looking at the pictures, and not speaking german, they appear to be 70's types mass produced units.... we are not in the 70's anymore.

    consider that irelands first passive house was built in 2002 using EWI method.
    consider that the majority of passive level houses in ireland choose the EWI route. The professionals, and the clients, in these builds tend to be well informed and well versed.

    Personally i have no enthusiasm to argue conspiracy theories.


  • #65
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,147 Mod ✭✭✭✭BryanF


    +1
    choose your EWI system manufacturer and installer carefully, this is the critical issue.. you shouldn't necessarily go for the cheapest..


  • #66
    Peter Sweeney
    Registered Users, Registered Users 2 Posts: 44 ✭Peter Sweeney


    How good is a long term guarantee (say of 20 years) from a company that has just started up in business in the last two years. Most companies will likely to be long gone if you need to call on the guarantee


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  • #67
    Feardorca
    Registered Users, Registered Users 2 Posts: 79 ✭✭Feardorca


    Hi there check out ****************, all manufacturers of EIS.

    edit

    sydthebeat


  • #68
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,147 Mod ✭✭✭✭BryanF


    Peter Sweeney wrote: »
    How good is a long term guarantee (say of 20 years) from a company that has just started up in business in the last two years. Most companies will likely to be long gone if you need to call on the guarantee
    notice i said 'manufacturer', they give the guarantee and have more alot more than two years in Business. you then use their recommended installers, who you then independently checkout...


  • #69
    sas
    Registered Users, Registered Users 2 Posts: 1,282 ✭✭✭sas


    Peter Sweeney wrote: »
    How good is a long term guarantee (say of 20 years) from a company that has just started up in business in the last two years. Most companies will likely to be long gone if you need to call on the guarantee

    So what's your point?

    Do you suggest people not use EWI?

    Or do you suggest that EWI is fine but not to get hung up on the guarantee?


  • #70
    mikemike
    Registered Users, Registered Users 2 Posts: 107 ✭✭mikemike


    I was just wondering , is it possible to buy sheets/special type of thick wall paper that can be stuck to the cieling of a room to help increase insulation ?

    Surely someone must have come up with something like the above , considering the only obstacles are the light fittings on the cieling which would be easy enough to lower or work around , but then again the whole weight of the sheeting/whatever could be asking for trouble .

    Any help appreciated


  • #71
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,147 Mod ✭✭✭✭BryanF


    mikemike wrote: »
    I was just wondering , is it possible to buy sheets/special type of thick wall paper that can be stuck to the cieling of a room to help increase insulation ?

    Surely someone must have come up with something like the above , considering the only obstacles are the light fittings on the cieling which would be easy enough to lower or work around , but then again the whole weight of the sheeting/whatever could be asking for trouble .

    Any help appreciated
    yes, but the simple answer is these Sh*te.
    without going into the condensation/ mould etc.. its really a half ass'd solution

    'asking for trouble'.... you answered your own question.


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  • #72
    sydthebeat
    Subscribers Posts: 43,376 ✭✭✭✭sydthebeat


    mikemike wrote: »
    I was just wondering , is it possible to buy sheets/special type of thick wall paper that can be stuck to the cieling of a room to help increase insulation ?

    Surely someone must have come up with something like the above , considering the only obstacles are the light fittings on the cieling which would be easy enough to lower or work around , but then again the whole weight of the sheeting/whatever could be asking for trouble .

    Any help appreciated

    +1 with what bryan says.

    insulation propreties usually are based on thickness. If a material reduces heat loss, then the thicker the better.
    with single ply material such as wallpaper etc, no matter how good the material is at redusing heat loss, if its thin its of no real value.

    The only material which is of any use is a foil type to reflect heat however, in my opinion, radiated heat accounts for a small amount of heat transfer. Also, youd have a very space aged looking ceiling :P


  • #73
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,147 Mod ✭✭✭✭BryanF


    sydthebeat wrote: »
    +1 with what bryan says.

    insulation propreties usually are based on thickness. If a material reduces heat loss, then the thicker the better.
    with single ply material such as wallpaper etc, no matter how good the material is at redusing heat loss, if its thin its of no real value.

    The only material which is of any use is a foil type to reflect heat however, in my opinion, radiated heat accounts for a small amount of heat transfer. Also, youd have a very space aged looking ceiling :P
    http://en.wikipedia.org/wiki/Aerogel now were getting space age... (might be an expensive solution for mike though):)


  • #74
    ayeboy
    Registered Users, Registered Users 2 Posts: 147 ✭✭ayeboy


    I'm considering EWI on a renovation project on house with solid external walls. Major concern I have is how to stop water / moisture passing up through rising walls. The walls don't have any dpc. Is this an easy thing to rectify and if so how is it done? Any suggestions greatly appreciated.


  • #75
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,147 Mod ✭✭✭✭BryanF


    best to an arch/eng out who is familiar with rising damp.


  • #76
    S Connor
    Registered Users, Registered Users 2 Posts: 97 ✭✭S Connor


    Have read this thread with interest because I have had external insulation on my home and know to my cost how important it is to check out whoever is installing it. Even if they take you to see houses they say they have insulated KNOCK on the door and ask who did the work. Don't get caught out like I did by being shown another firms work. I got an installer from the SEI list and had to have my house TOTALLY redone it was such a mess. Needless to say this cost me thousands and I now have a huge loan to repay. At the end of the day I would recomend external insulation as my home is so much warmer. I also recomend you do VERY careful research of your chosen installer. I don't want to see anyone else in the mess I now find myself in.


  • #77
    Fordpefect
    Registered Users, Registered Users 2 Posts: 36 ✭Fordpefect


    S Connor wrote: »
    Have read this thread with interest because I have had external insulation on my home and know to my cost how important it is to check out whoever is installing it. Even if they take you to see houses they say they have insulated KNOCK on the door and ask who did the work. Don't get caught out like I did by being shown another firms work. I got an installer from the SEI list and had to have my house TOTALLY redone it was such a mess. Needless to say this cost me thousands and I now have a huge loan to repay. At the end of the day I would recomend external insulation as my home is so much warmer. I also recomend you do VERY careful research of your chosen installer. I don't want to see anyone else in the mess I now find myself in.
    Hi s Connor can you pm me the name of the company that you would not reccomend. As I've had a few quotes, but would not like the hassle you had
    Regards


  • #78
    S Connor
    Registered Users, Registered Users 2 Posts: 97 ✭✭S Connor


    Fordpefect wrote: »
    Hi s Connor can you pm me the name of the company that you would not reccomend. As I've had a few quotes, but would not like the hassle you had
    Regards

    Sorry Fordpefect have been out of touch for a while and have only just seen your question. Have you had your external insulation done yet?


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